A large pipe pile flexible steel formwork and construction method

Abstract

The invention relates to the technical field of large pipe pile molds, and discloses a large pipe pile flexible steel template and a construction method, wherein inner ring C-shaped steel template components are arranged on both sides of an intermediate support mechanism, and sealing connection components are arranged at the upper and lower ends of the intermediate support mechanism through a tightening lock hook mechanism, and after the tightening lock hook mechanism is locked by bolts, the inner ring C-shaped steel template component is elastically deformed under the pressure of the sealing connection component, so that two groups of sealing connection components and two groups of inner ring C-shaped steel template components form an inner ring template; compared with a double-opening template, the invention has only one seam, reduces one template joint, improves the integrity of the template and its working efficiency; makes full use of the elastic deformation of the steel material itself, and when removing the mold, only the bolts fixed on the steel template need to be removed, and the steel template can automatically pop open by using its own elasticity, and then the mold installation, mold removal and mold cleaning work are completed, and the next cycle of construction is carried out.

Description

Technical Field

[0001] The invention relates to the technical field of large pipe pile moulds, in particular to a large pipe pile flexible steel template and a construction method. Background Art

[0002] Prestressed concrete large-diameter pipe piles (referred to as "large pipe piles") use a composite process combining centrifugal, vibration, and roller pressing to form concrete pipe sections. They are suitable for many soil types and have a circular cross-section, which can effectively reduce the impact of wave force and water flow force on the pile body. They have a long service life and low maintenance costs. They are an ideal pile foundation structure for marine engineering buildings and are widely used in pile foundations of coastal high-pile wharf projects. The large pipe pile template requires an inner ring template and an outer ring template that are coaxially set inside and outside. The inner ring template and the outer ring template are assembled and spliced ​​by multiple groups of C-shaped rings, which makes the overall assembly and disassembly of the large pipe pile template more complicated. For this reason, we have introduced a large pipe pile flexible steel template and construction method. Summary of the invention

[0003] The object of the present invention is to provide a large pipe pile flexible steel formwork and a construction method to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A large pipe pile flexible steel formwork comprises an intermediate support mechanism and a bottom support mechanism, inner ring C-shaped steel formwork components are arranged on both sides of the intermediate support mechanism, and sealing connection components are arranged at the upper and lower ends of the intermediate support mechanism through a tightening lock hook mechanism, and the upper and lower ends of the inner ring C-shaped steel formwork components are inserted into the card grooves on the sides of the sealing connection components, and after the tightening lock hook mechanism is locked by bolts, the inner ring C-shaped steel formwork components are elastically deformed under the pressure of the sealing connection components, so that two groups of sealing connection components and two groups of inner ring C-shaped steel formwork components form an inner ring formwork;

[0006] The limiting rings at both ends of the bottom support mechanism are sleeved on the outside of the inner ring template, and the first support wheels for supporting the outer ring C-shaped steel template are provided at the four corners of the bottom of the bottom support mechanism, and a clamping mechanism is installed in the center of both sides of the bottom of the bottom support mechanism. The clamping mechanism is used to clamp from the middle of both sides of the outer ring C-shaped steel template, so that the outer ring C-shaped steel template is elastically deformed and connected to the sealing assembly at the top of the bottom support mechanism, so that the outer ring C-shaped steel template and the sealing assembly form an outer ring template, and the outer ring template is sleeved on the outside of the limiting ring.

[0007] Preferably, the inner ring C-shaped steel template assembly includes an inner ring C-shaped template and plug-in plates distributed up and down on the inner wall of the inner ring C-shaped template;

[0008] The upper and lower ends of the inner ring C-shaped template are provided with plug-in protrusions, and the sealing connection assembly includes an I-shaped sealing seat and slots provided on both sides of the I-shaped sealing seat for inserting the plug-in protrusions;

[0009] The outer side wall of the plug-in protrusion is provided with an indented groove, so that after the two groups of sealing connection components and the two groups of inner ring C-shaped steel template components form the inner ring template, the outer side surface of the inner ring template is flush.

[0010] Preferably, the intermediate support mechanism comprises a support seat, the upper and lower ends of the support seat are provided with inner grooves, the cavity inside the support seat is movably connected with upper and lower guide wheels through a pin shaft, and a slide groove is provided at one end of the middle part of the cavity, and the tightening lock hook mechanism comprises a column arranged in the middle part of the inner groove, a V-shaped clamping seat fixed at one end of the column, a pull rope connected to the other end of the column, and an internal threaded cylinder slidably connected in the slide groove;

[0011] The pull rope extends into the cavity and passes over the corresponding guide wheel before being connected to the internal threaded cylinder;

[0012] A T-shaped plate is provided at the connection between the column and the V-shaped holder, and clamping plates are provided on both sides of the T-shaped plate;

[0013] The support seat is provided with a plug-in through slot for inserting the plug-in board, and the end of the plug-in board is provided with a slot for inserting the card board.

[0014] Preferably, support arms are movably connected to both sides of the inner groove through connecting shafts, and a second support wheel for supporting an I-shaped sealing seat is movably connected to the end of the support arm. Springs are also provided on both sides of the inner groove, and the springs are supported on the corresponding support arms. The T-shaped plate is supported on the inner wall of the support arm.

[0015] Preferably, a connecting block is provided in the middle of the I-shaped sealing seat, vertical grooves and buckle grooves located at the connection between the vertical grooves and the I-shaped sealing seat are provided on both sides of the connecting block, and the V-shaped socket is connected to the I-shaped sealing seat by buckling with the buckle grooves to achieve connection between the V-shaped socket and the I-shaped sealing seat.

[0016] Preferably, both ends of the support seat are fixedly connected with a horizontal center tube and a third support wheel movably connected to the horizontal center tube through a horizontal arm, and the third support wheel is supported on the inner wall of the inner ring template;

[0017] The bolt passes through the corresponding horizontal center tube and extends into the cavity, and then is threadedly connected with the internal thread tube.

[0018] Preferably, the bottom support mechanism comprises a bracket fixed to the outer end of the limiting ring, a sleeve ring provided in the middle of the bracket and sleeved on the horizontal center tube, and a base connected between the bottom of the bracket;

[0019] The sealing assembly is connected to the top between the two groups of brackets, and the first supporting wheel is installed on the base.

[0020] Preferably, the clamping mechanism includes a connecting frame arranged on the side of the middle part of the base, a clamping arm movably connected to the upper part of the connecting frame through a first shaft rod, a clamping wheel movably connected to the top of the clamping arm, a hydraulic cylinder movably connected to the lower part of the connecting frame through a second shaft rod, and an ear plate movably connected to the piston rod at the output end of the hydraulic cylinder through a third pin rod, and the ear plate is fixed at the bottom of the clamping arm.

[0021] The present invention also provides a construction method of a large pipe pile flexible steel formwork, which specifically comprises the following steps:

[0022] S1. Connect the middle support mechanism to the bottom support mechanism, and then assemble the sealing connection assembly to the upper and lower ends of the middle support mechanism by tightening the locking hook mechanism;

[0023] S2. Insert the upper and lower ends of the inner ring C-shaped steel template assembly into the slots on the side of the sealing connection assembly, and tighten the bolts so that the inner ring C-shaped steel template assembly is elastically deformed under the pressure of the sealing connection assembly, thereby forming an inner ring template with two sets of sealing connection assemblies and two sets of inner ring C-shaped steel template assemblies;

[0024] S3. The outer ring C-shaped steel template is located on the first support wheel at the four corners of the bottom of the bottom support mechanism. The clamping mechanism clamps the outer ring C-shaped steel template from the middle of both sides, so that the outer ring C-shaped steel template is connected to the sealing component at the top of the bottom support mechanism after elastic deformation. The ends of both sides of the outer ring C-shaped steel template are inserted into the sealing grooves on both sides of the sealing component, so that the outer ring C-shaped steel template and the sealing component form an outer ring template;

[0025] S4. Since the limiting ring is sleeved on the outside of the inner ring template and the outer ring template is sleeved on the outside of the limiting ring, a concrete pouring space is formed between the inner ring template, the outer ring template and the limiting ring. A pouring pipe is provided at the upper end of the sealing component, and concrete is poured into the concrete pouring space through the pouring pipe.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: after the tightening hook mechanism is locked by bolts, the inner ring C-shaped steel template assembly is elastically deformed under the pressure of the sealing connection assembly, so that two sets of sealing connection assemblies and two sets of inner ring C-shaped steel template assemblies form an inner ring template;

[0027] The elastic deformation of the inner ring C-shaped steel formwork assembly is fully utilized, and the inner ring C-shaped steel formwork assembly is connected with two sets of sealing connection assemblies to become an "O"-shaped inner ring formwork. The various components of the inner ring formwork are closely connected, with stronger integrity and better sealing.

[0028] The clamping mechanism is used to clamp from the middle of both sides of the outer ring C-shaped steel formwork, so that the outer ring C-shaped steel formwork is connected to the sealing component on the top of the bottom support mechanism after elastic deformation, so that the outer ring C-shaped steel formwork and the sealing component form an outer ring formwork, making full use of the elastic deformation of the outer ring C-shaped steel formwork itself, and connecting the single-opening outer ring C-shaped steel formwork with the sealing component to form an "O"-shaped outer ring formwork. Compared with the double-opening formwork, there is only one seam, which reduces one template joint, improves the integrity of the formwork and its work efficiency; the limiting ring is sleeved on the outside of the inner ring formwork, and the outer ring formwork is sleeved on the outside of the limiting ring. In this way, through the setting of the limiting ring, the inner ring formwork and the outer ring formwork can be sealed at both ends to prevent leakage during concrete pouring, and the elastic deformation of the steel material itself can be fully utilized. When removing the formwork, it is only necessary to remove the bolts fixed on the steel formwork, and the steel formwork can automatically pop open using its own elasticity, and then the mold installation, mold removal and mold cleaning work are completed to carry out the next cycle of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall decomposition structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the inner ring C-shaped steel template assembly of the present invention;

[0031] Figure 3 It is a schematic diagram of a first three-dimensional structure of the sealing connection assembly of the present invention;

[0032] Figure 4 It is a second three-dimensional structural schematic diagram of the sealing connection assembly of the present invention;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of the intermediate support mechanism of the present invention;

[0034] Figure 6 It is a three-dimensional structural schematic diagram of the tensioning lock hook mechanism of the present invention;

[0035] Figure 7 It is a schematic diagram of the cross-sectional structure when the inner ring template is formed according to the present invention;

[0036] Figure 8 It is a cross-sectional structural schematic diagram of the tensioning lock hook mechanism of the present invention;

[0037] Fig. 9 It is a schematic diagram of the three-dimensional structure of the bottom support mechanism of the present invention;

[0038] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at A in the middle;

[0039] Fig.11 It is a schematic diagram of the cross-sectional structure when the outer ring template is formed in the present invention;

[0040] Fig.12 It is a schematic diagram of the cross-sectional structure of the outer ring template, the inner ring template and the limiting ring of the present invention.

[0041] In the figure: 1. Inner ring C-shaped steel template assembly; 101. Inner ring C-shaped template; 102. Inner recessed groove; 103. Inserting protrusion; 104. Slotting; 105. Inserting plate; 106. Inner ring template; 2. Sealing connection assembly; 201. I-shaped sealing seat; 202. Slot; 203. Vertical slot; 204. Connecting block; 205. Buckle slot; 3. Intermediate supporting mechanism; 301. Horizontal center tube; 302. Horizontal arm; 303. Third supporting wheel; 304. Support seat; 305. V-shaped seat; 306. Inserting through slot; 307. T-shaped plate; 308. Support arm; 309. Second supporting wheel; 310. Column; 311. Card plate; 312. Connecting shaft; 313. Spring; 3 14. Guide wheel; 315. Pull rope; 316. Internal threaded cylinder; 317. Slide groove; 319. Cavity; 4. Outer ring C-shaped steel template; 401. Outer ring template; 5. Bottom support mechanism; 501. Base; 502. Limiting ring; 503. Bracket; 504. Sleeve ring; 505. First support wheel; 506. Sealing assembly; 507. Casting pipe; 508. Sealing groove; 509. Clamping arm; 510. Clamping wheel; 511. Connecting frame; 512. Hydraulic cylinder; 513. First shaft rod; 514. Ear plate; 515. Second shaft rod; 516. Third pin rod; 517. Piston rod; 518. Connecting pin; 519. L-shaped connector; 520. Limiting groove steel seat; 6. Bolt. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example:

[0044] See also Figure 1-12 , the present invention provides a technical solution:

[0045] A large pipe pile flexible steel formwork, comprising an intermediate support mechanism 3 and a bottom support mechanism 5;

[0046] The intermediate support mechanism 3 includes a support seat 304, and inner grooves are provided at the upper and lower ends of the support seat 304. An upper and lower set of guide wheels 314 are movably connected in a cavity 319 inside the support seat 304 through a pin shaft, and a slide groove 317 is provided at one end of the middle of the cavity 319. The tightening lock hook mechanism includes a column 310 arranged in the middle of the inner groove, a V-shaped clamping seat 305 fixed at one end of the column 310, a pull rope 315 connected to the other end of the column 310, and an internal threaded cylinder 316 slidably connected to the slide groove 317;

[0047] The pull rope 315 extends into the cavity 319 and passes over the corresponding guide wheel 314 and is connected to the internal threaded tube 316; a T-shaped plate 307 is provided at the connection between the column 310 and the V-shaped holder 305, and clamping plates 311 are provided on both sides of the T-shaped plate 307;

[0048] The support seat 304 is provided with an insertion slot 306 for inserting the plug board 105 , and the end of the plug board 105 is provided with an opening slot 104 for inserting the card board 311 .

[0049] Support arms 308 are movably connected on both sides of the inner groove through connecting shafts 312, and the ends of the support arms 308 are movably connected to second support wheels 309 for supporting the I-shaped sealing seat 201. Springs 313 are also provided on both sides of the inner groove, and the springs 313 are supported on the corresponding support arms 308, and the T-shaped plate 307 is supported on the inner wall of the support arm 308.

[0050] An inner ring C-shaped steel formwork assembly 1 is provided on both sides of the middle support mechanism 3, and a sealing connection assembly 2 is provided at the upper and lower ends of the middle support mechanism 3 through a tightening lock hook mechanism;

[0051] The inner circle C-shaped steel template assembly 1 comprises an inner circle C-shaped template 101 and plug-in plates 105 distributed on the inner wall of the inner circle C-shaped template 101;

[0052] The upper and lower ends of the inner ring C-shaped template 101 are provided with plug-in protrusions 103, and the sealing connection assembly 2 includes an I-shaped sealing seat 201 and slots 202 provided on both sides of the I-shaped sealing seat 201 for inserting the plug-in protrusions 103;

[0053] An inner recessed groove 102 is provided on the outer side wall of the plug-in protrusion 103 so that after the two sets of sealing connection components 2 and the two sets of inner ring C-shaped steel template components 1 form the inner ring template 106, the outer side surface of the inner ring template 106 is flush.

[0054] A connecting block 204 is provided in the middle of the I-shaped sealing seat 201, and vertical grooves 203 and buckle grooves 205 located at the connection between the vertical grooves 203 and the I-shaped sealing seat 201 are provided on both sides of the connecting block 204. The V-shaped socket 305 is connected to the buckle grooves 205 by buckling, thereby realizing the connection between the V-shaped socket 305 and the I-shaped sealing seat 201.

[0055] The upper and lower ends of the inner ring C-shaped steel formwork assembly 1 are inserted into the slots 202 on the side of the sealing connection assembly 2. After the tightening hook mechanism is locked by the bolts 6, the inner ring C-shaped steel formwork assembly 1 is elastically deformed under the pressure of the sealing connection assembly 2, so that the two sets of sealing connection assemblies 2 and the two sets of inner ring C-shaped steel formwork assemblies 1 form an inner ring template 106.

[0056] The two ends of the support seat 304 are fixedly connected with a horizontal center tube 301 and a third support wheel 303 movably connected to the horizontal center tube 301 through a horizontal arm 302, and the third support wheel 303 is supported on the inner wall of the inner ring template 106; the bolt 6 passes through the corresponding horizontal center tube 301 and extends into the cavity 319 and is screwed to the internal threaded tube 316.

[0057] The bottom support mechanism 5 includes a bracket 503 fixed to the outer end of the limiting ring 502, a sleeve ring 504 provided in the middle of the bracket 503 and sleeved on the horizontal center tube 301, and a base 501 connected between the bottom of the bracket 503;

[0058] An L-shaped connector 519 is provided at the bottom of the bracket 503, and the L-shaped connector 519 is inserted into the limiting channel steel seat 520 at the upper end of the base 501, so that when the two sets of limiting rings 502 are moved outward, the L-shaped connector 519 gradually moves outward along the limiting channel steel seat 520, and when the two sets of limiting rings 502 are away from each other, the two sets of limiting rings 502 can be separated from the formed concrete large pipe pile;

[0059] The sealing assembly 506 is movably connected to the top between the two sets of brackets 503 through the plug pin 518, so that when the two sets of limit rings 502 are moved outward, the sealing assembly 506 can be removed from the bracket 503 at the same time;

[0060] The first supporting wheel 505 is mounted on the base 501 .

[0061] The clamping mechanism includes a connecting frame 511 arranged on the middle side of the base 501, a clamping arm 509 movably connected to the upper part of the connecting frame 511 through a first shaft rod 513, a clamping wheel 510 movably connected to the top of the clamping arm 509, a hydraulic cylinder 512 movably connected to the lower part of the connecting frame 511 through a second shaft rod 515, and an ear plate 514 movably connected to the piston rod 517 at the output end of the hydraulic cylinder 512 through a third pin rod 516, and the ear plate 514 is fixed at the bottom of the clamping arm 509.

[0062] The limiting rings 502 at both ends of the bottom support mechanism 5 are sleeved on the outside of the inner ring template 106, and the first support wheels 505 for supporting the outer ring C-shaped steel template part 4 are provided at the four corners at the bottom of the bottom support mechanism 5, and a clamping mechanism is installed in the center of both sides of the bottom of the bottom support mechanism 5. The clamping mechanism is used to clamp from the middle of both sides of the outer ring C-shaped steel template part 4, so that the outer ring C-shaped steel template part 4 is elastically deformed and connected to the sealing assembly 506 at the top of the bottom support mechanism 5, so that the outer ring C-shaped steel template part 4 and the sealing assembly 506 form an outer ring template 401, and the outer ring template 401 is sleeved on the outside of the limiting ring 502.

[0063] The limiting ring 502 is sleeved on the outer side of the inner ring template 106, and the outer ring template 401 is sleeved on the outer side of the limiting ring 502. In this way, the inner ring template 106 and the outer ring template 401 can be sealed by the setting of the limiting ring 502 to prevent leakage during concrete pouring. However, a certain exhaust gap is still retained between the inner ring template 106 and the outer ring template 401. When pouring concrete, the gap can exhaust air in time, ensuring that the concrete fills the concrete pouring space while ensuring that the concrete does not leak out from the gap.

[0064] Since the steel material of the outer ring C-shaped steel template member 4 is flexible, when the pressing mechanism presses from the middle of both sides of the outer ring C-shaped steel template member 4, the outer ring C-shaped steel template member 4 can be elastically deformed;

[0065] Since the steel material of the inner ring C-shaped template 101 is flexible, when the upper and lower groups of I-shaped sealing seats 201 squeeze the inner ring C-shaped template 101 from the upper and lower ends, the inner ring C-shaped template 101 can be elastically deformed.

[0066] The present invention also provides a construction method of a large pipe pile flexible steel formwork, which specifically comprises the following steps:

[0067] S1, connect the middle support mechanism 3 to the bottom support mechanism 5, and then assemble the sealing connection assembly 2 to the upper and lower ends of the middle support mechanism 3 by tightening the locking hook mechanism;

[0068] S2, insert the upper and lower ends of the inner ring C-shaped steel formwork assembly 1 into the slots 202 on the side of the sealing connection assembly 2, and tighten the bolts 6, so that the inner ring C-shaped steel formwork assembly 1 is elastically deformed under the pressure of the sealing connection assembly 2, so that the two sets of sealing connection assemblies 2 and the two sets of inner ring C-shaped steel formwork assemblies 1 form an inner ring template 106;

[0069] S3, the outer ring C-shaped steel template member 4 is located on the first support wheel 505 at the four corners of the bottom of the bottom support mechanism 5, and the clamping mechanism is clamped from the middle of both sides of the outer ring C-shaped steel template member 4, so that the outer ring C-shaped steel template member 4 is connected to the sealing component 506 at the top of the bottom support mechanism 5 after elastic deformation, and the ends of both sides of the outer ring C-shaped steel template member 4 are inserted into the sealing grooves 508 on both sides of the sealing component 506, so that the outer ring C-shaped steel template member 4 and the sealing component 506 form an outer ring template 401;

[0070] S4. Since the limiting ring 502 is sleeved on the outside of the inner ring template 106, and the outer ring template 401 is sleeved on the outside of the limiting ring 502, a concrete pouring space is formed between the inner ring template 106, the outer ring template 401 and the limiting ring 502. A pouring pipe 507 is provided at the upper end of the sealing component 506. Concrete is poured into the concrete pouring space through the pouring pipe 507. After the concrete is cured and formed, a large concrete pipe pile is formed.

[0071] Specifically, when in use, the middle support mechanism 3 is connected to the bottom support mechanism 5, that is, the sleeve ring 504 is sleeved on the horizontal center tube 301, and the sleeve ring 504 is located on the central axis of the horizontal center tube 301, so that the limiting ring 502 is sleeved on the outside of the inner ring template 106, and the outer ring template 401 is sleeved on the outside of the limiting ring 502, and the inner ring template 106 and the outer ring template 401 are also coaxially arranged;

[0072] The sealing connection assembly 2 is assembled at the upper and lower ends of the intermediate support mechanism 3 by tightening the locking hook mechanism, that is, the two ends of the sealing connection assembly 2 are inserted into the limiting ring 502, and the connecting block 204 on the sealing connection assembly 2 is seated on the corresponding V-shaped card seat 305. At this time, both sides of the V-shaped card seat 305 slide along the vertical groove 203 until the V-shaped card seat 305 is connected with the buckle groove 205 by buckling, so as to realize the connection between the V-shaped card seat 305 and the I-shaped sealing seat 201. At this time, the I-shaped sealing seat 201 is stably supported by the second supporting wheels 309 distributed in the front and rear;

[0073] Insert both ends of the inner ring C-shaped steel formwork assembly 1 into the limiting ring 502, and make the upper and lower ends of the inner ring C-shaped steel formwork assembly 1 initially inserted into the card slot 202 on the side of the sealing connection assembly 2, and at the same time insert the plug-in plate 105 from the plug-in slot 306 on the support seat 304 into the inner groove;

[0074] The bolt 6 penetrates the corresponding horizontal center tube 301 and extends into the cavity 319, and then is threadedly connected with the internal thread tube 316. The bolt 6 is locked, so that the inner ring C-shaped steel formwork assembly 1 is elastically deformed under the pressure of the sealing connection assembly 2, so that the two sets of sealing connection assemblies 2 and the two sets of inner ring C-shaped steel formwork assemblies 1 form the inner ring template 106;

[0075] like Figure 8 As shown, when the bolt 6 is locked, the internal threaded cylinder 316 moves into the slide groove 317, so that the internal threaded cylinder 316 pulls the pull rope 315, so that the pull rope 315 pulls the I-shaped sealing seat 201 through the column 310, the V-shaped clamping seat 305 and the connecting block 204, so that the upper and lower groups of I-shaped sealing seats 201 gradually move into the inner groove (at this time, the T-shaped plate 307 presses the support arm 308 to rotate, so that the support arm 308 is always supported on the I-shaped sealing seat 201, achieving the support balance of the I-shaped sealing seat 201, and the spring 313 is in a compressed state), and at the same time, the clamping plate 311 is inserted into the slot 104 at the end of the plug-in board 105 (as shown in FIG. Figure 7 shown);

[0076] At this time, the upper and lower I-shaped sealing seats 201 squeeze the inner ring C-shaped template 101 from the upper and lower ends, so that the inner ring C-shaped template 101 is elastically deformed, so that the end of the inner ring C-shaped template 101 is further inserted into the groove 202 on the side of the I-shaped sealing seat 201, until the two sets of sealing connection components 2 and the two sets of inner ring C-shaped steel template components 1 form the inner ring template 106;

[0077] When the upper and lower groups of I-shaped sealing seats 201 squeeze the inner ring C-shaped template 101 from the upper and lower ends, so that the inner ring C-shaped template 101 produces elastic deformation, the inner ring C-shaped template 101 may move outward and disengage from the clamping groove 202 on the side of the I-shaped sealing seat 201. At this time, since the clamping plate 311 is inserted into the slot 104 at the end of the plug-in board 105, the plug-in board 105 generates a pulling force on the inner ring C-shaped template 101, thereby preventing the inner ring C-shaped template 101 from disengaging from the I-shaped sealing seat 201.

[0078] The outer ring C-shaped steel template member 4 is placed on the first support wheels 505 at the four bottom corners of the bottom support mechanism 5;

[0079] The hydraulic cylinder 512 controls the piston rod 517 to retract, so that the piston rod 517 pulls the bottom of the clamping arm 509 through the ear plate 514, and the clamping arm 509 rotates with the first shaft rod 513 as the center of the circle. The clamping wheel 510 on the top of the clamping arm 509 clamps from the middle of both sides of the outer ring C-shaped steel template member 4, so that the outer ring C-shaped steel template member 4 is elastically deformed and connected to the sealing component 506 on the top of the bottom support mechanism 5 (such as Fig.11 The outer ring C-shaped steel template member 4 is in the state shown), that is, the ends of both sides of the outer ring C-shaped steel template member 4 are inserted into the sealing grooves 508 on both sides of the sealing assembly 506, so that the outer ring C-shaped steel template member 4 and the sealing assembly 506 form an outer ring template 401;

[0080] Since the limiting ring 502 is sleeved on the outside of the inner ring template 106 and the outer ring template 401 is sleeved on the outside of the limiting ring 502, a concrete pouring space is formed between the inner ring template 106, the outer ring template 401 and the limiting ring 502. A pouring pipe 507 is provided at the upper end of the sealing component 506, and concrete is poured into the concrete pouring space through the pouring pipe 507.

[0081] When the large pipe pile flexible steel formwork needs to be disassembled, the hydraulic cylinder 512 controls the piston rod 517 to extend, so that the clamping wheel 510 on the top of the clamping arm 509 gradually releases the outer ring C-shaped steel formwork member 4, so that the outer ring C-shaped steel formwork member 4 returns to its original state under the action of its own elastic force and sits on the first support wheel 505;

[0082] Then, the two sets of limiting rings 502 are moved outward, so that the L-shaped connector 519 gradually moves outward along the limiting channel steel seat 520. When the two sets of limiting rings 502 are away from each other, the two sets of limiting rings 502 can be separated from the formed concrete large pipe pile, and the sealing assembly 506 can be removed from the bracket 503;

[0083] Pull out the large concrete pipe pile from the outside of the inner ring formwork 106, and then remove the bolt 6;

[0084] Under the elastic force of the spring 313 on the support arm 308, the support arm 308 gradually rotates and resets, so that the two sets of second support wheels 309 on the upper side gradually approach each other, pushing the upper I-shaped sealing seat 201 upward, and the two sets of second support wheels on the lower side gradually approach each other, pushing the lower I-shaped sealing seat 201 downward;

[0085] At this time, when the support arm 308 gradually rotates to reset, it drives the clamping plate 311 to reset through the T-shaped plate 307 until the clamping plate 311 is disengaged from the slot 104 at the end of the plug board 105;

[0086] At the same time, since the upper and lower I-shaped sealing seats 201 gradually move away from each other, the I-shaped sealing seats 201 no longer press the inner ring C-shaped template 101, and the inner ring C-shaped template 101 returns to its original state under the action of its own elasticity;

[0087] Then, the inner circle C-shaped template 101 is pulled out to the outside of the support seat 304, so that the plug-in plate 105 is pulled out from the plug-in groove 306 on the support seat 304, thereby realizing the disassembly of the large pipe pile flexible steel template.

[0088] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large pipe pile flexible steel formwork, comprising an intermediate support mechanism and a bottom support mechanism, characterized in that: Inner ring C-shaped steel formwork assemblies are provided on both sides of the intermediate support mechanism, and sealing connection assemblies are provided at the upper and lower ends of the intermediate support mechanism through a tightening lock hook mechanism, and the upper and lower ends of the inner ring C-shaped steel formwork assembly are inserted into the card grooves on the sides of the sealing connection assembly. After the tightening lock hook mechanism is locked by bolts, the inner ring C-shaped steel formwork assembly is elastically deformed under the pressure of the sealing connection assembly, so that the two groups of sealing connection assemblies and the two groups of inner ring C-shaped steel formwork assemblies form an inner ring template; The limiting rings at both ends of the bottom support mechanism are sleeved on the outside of the inner ring template, and the first supporting wheels for supporting the outer ring C-shaped steel template are provided at the four corners of the bottom of the bottom support mechanism, and a clamping mechanism is installed in the center of both sides of the bottom of the bottom support mechanism, and the clamping mechanism is used to clamp from the middle of both sides of the outer ring C-shaped steel template, so that the outer ring C-shaped steel template is connected to the sealing component at the top of the bottom support mechanism after elastic deformation, so that the outer ring C-shaped steel template and the sealing component form an outer ring template, and the outer ring template is sleeved on the outside of the limiting ring; The inner ring C-shaped steel template assembly includes an inner ring C-shaped template and plug-in plates distributed up and down the inner wall of the inner ring C-shaped template; The upper and lower ends of the inner ring C-shaped template are provided with plug-in protrusions, and the sealing connection assembly includes an I-shaped sealing seat and slots provided on both sides of the I-shaped sealing seat for inserting the plug-in protrusions; The outer side wall of the plug-in protrusion is provided with an indented groove, so that after the two sets of sealing connection components and the two sets of inner ring C-shaped steel template components form the inner ring template, the outer side surface of the inner ring template is flush; The intermediate support mechanism includes a support seat, the upper and lower ends of the support seat are provided with inner grooves, the cavity inside the support seat is movably connected with upper and lower guide wheels through a pin shaft, and a slide groove is provided at one end of the middle part of the cavity, and the tensioning lock hook mechanism includes a column arranged in the middle part of the inner groove, a V-shaped clamping seat fixed at one end of the column, a pull rope connected to the other end of the column, and an internal threaded cylinder slidably connected in the slide groove; The pull rope extends into the cavity and passes over the corresponding guide wheel before being connected to the internal threaded cylinder; A T-shaped plate is provided at the connection between the column and the V-shaped holder, and clamping plates are provided on both sides of the T-shaped plate; The support seat is provided with a plug-in slot for inserting the plug-in board, and the end of the plug-in board is provided with a slot for inserting the card board; The two ends of the support seat are fixedly connected with a horizontal center tube and a third support wheel movably connected to the horizontal center tube through a horizontal arm, and the third support wheel is supported on the inner wall of the inner ring template; The bolt passes through the corresponding horizontal center tube and extends into the cavity, and then is threadedly connected with the internal thread tube; The bottom support mechanism includes a bracket fixed to the outer end of the limiting ring, a sleeve ring provided in the middle of the bracket and sleeved on the horizontal center tube, and a base connected between the bottom of the bracket; The sealing assembly is connected to the top between the two sets of brackets, and the first supporting wheel is mounted on the base; The clamping mechanism includes a connecting frame arranged on the side of the middle part of the base, a clamping arm movably connected to the upper part of the connecting frame through a first shaft rod, a clamping wheel movably connected to the top of the clamping arm, a hydraulic cylinder movably connected to the lower part of the connecting frame through a second shaft rod, and an ear plate movably connected to the piston rod at the output end of the hydraulic cylinder through a third pin rod, and the ear plate is fixed to the bottom of the clamping arm.

2. A large pipe pile flexible steel formwork according to claim 1, characterized in that: The inner groove is movably connected to support arms on both sides through connecting shafts, and the ends of the support arms are movably connected to second support wheels for supporting the I-shaped sealing seat. Springs are also provided on both sides of the inner groove, and the springs are supported on the corresponding support arms. The T-shaped plate is supported on the inner wall of the support arm.

3. The large pipe pile flexible steel formwork according to claim 1 is characterized in that: A connecting block is provided in the middle of the I-shaped sealing seat, and vertical grooves and buckle grooves located at the connection between the vertical grooves and the I-shaped sealing seat are provided on both sides of the connecting block. The V-shaped socket is connected to the buckle groove by buckling, thereby realizing the connection between the V-shaped socket and the I-shaped sealing seat.

4. A construction method for a large pipe pile flexible steel formwork according to any one of claims 1 to 3, characterized in that: The specific steps include: S1. Connect the middle support mechanism to the bottom support mechanism, and then assemble the sealing connection assembly to the upper and lower ends of the middle support mechanism by tightening the locking hook mechanism; S2. Insert the upper and lower ends of the inner ring C-shaped steel template assembly into the slots on the side of the sealing connection assembly, and tighten the bolts so that the inner ring C-shaped steel template assembly is elastically deformed under the pressure of the sealing connection assembly, thereby forming an inner ring template with two sets of sealing connection assemblies and two sets of inner ring C-shaped steel template assemblies; S3, the outer ring C-shaped steel template is located on the first support wheel at the four corners of the bottom of the bottom support mechanism, and the clamping mechanism is clamped from the middle of both sides of the outer ring C-shaped steel template, so that the outer ring C-shaped steel template is elastically deformed and connected to the sealing component at the top of the bottom support mechanism, so that the outer ring C-shaped steel template and the sealing component form an outer ring template; S4. Since the limiting ring is sleeved on the outside of the inner ring template and the outer ring template is sleeved on the outside of the limiting ring, a space for pouring concrete is formed between the inner ring template, the outer ring template and the limiting ring.

Images